Transcript hardy weinberg equilibrium

POPULATION
GENETICS
Vocab
Population- group of organisms of the
SAME species that occupies certain area
Species- organisms that can INTERBREED
and produce FERTILE offspring
Ex) Sauerman Woods Crown Point
-whitetail rabbits
-deer
-sparrows
-squirrels
Liger (lion and tiger)-infertile
Cama (camel and llama)-infertile
Tigon (tiger and lion)--infertile
Can we capture all the whitetail
rabbits in Sauerman Woods?
Population Sampling- technique uses
part of population to represent whole
population
Capture 100 random rabbits
– These rabbits are a representation of all the
rabbits in the area.
– We can study many things within this group…
Genetics of the Population…
Gene Pool- all of the
genes of every individual
in population sample
Frequency- how often
something occurs
Population genetics
involves studying the
frequency with which
certain alleles
occur in a population’s
gene pool.
In 50 years, will the allele
frequencies be the same?
Hardy-Weinberg Equilibrium Principle –
“Under certain conditions, the frequencies of the
dominant and recessive alleles will remain the same
generation after generation.”
HARDY WEINBERG
5 CONDITIONS
To keep H-W equilibrium there must be:
No mutations
Large population
Population size remains same (no migration)
Random mating
No “survival of fittest” (evolution)
***These conditions are NEVER all met, so
populations are always changing and NOT in
H-W equilibrium.